Image Optimization 5-33
5.9 TDI
TDI mode is intended to provide information of low-velocity tissue motion, specifically for
cardiac movement.
There are 4 types of TDI mode:
Tissue Velocity Imaging (TVI): This imaging mode is used to detect tissue
movement with direction and speed information.
Tissue Energy Imaging (TEI): This imaging mode reflects the status of cardiac
movement by displaying the intensity of tissue, the brighter the color the less the
intensity.
Tissue Velocity Doppler Imaging (TVD): This imaging mode provides direction
and speed information of the tissue quantificationally with doppler spectrum.
Tissue Velocity M Imaging (TVM): This function assists to observe the cardiac
motion through a direct angle. TVM mode is also called Color Tissue M mode,
refer to "5.10 Color M Mode" for details.
Only phased probe is valid for TDI function.
5.9.1 TDI Exam Protocol
Enter TDI
User-defined shortcut key
a) Assign a user-defined shortcut key for TDI: the setting path is "[Setup] ->
[System Preset] -> [Key Config]". Please refer to "14.1.7 Key Config” for
details.
b) Press the user-defined key in B mode to enter TVI mode.
In real-time mode, click in the bottom-left corner of the screen to enter
the corresponding TDI mode as follows:
In B or B+Color mode, click [TDI] to enter TVI mode, parameters of TVI mode
will be displayed in the soft menu.
In Power mode, click [TDI] to enter TEI mode, parameters of TEI mode will
be displayed in the soft menu.
In PW mode, click [TDI] to enter TVD mode, parameters of TVD mode will be
displayed in the soft menu.
In M mode, click [TDI] to enter TVM mode, parameters of TVM mode will be
displayed in the soft menu.
Switching between the TDI modes
In T
DI mode, p
ress <Colo
r>, <Powe
r>, <M> or <P
W
> to swi
tch between
the
modes.
Exit TDI
Click or press the user-defined key to exit TDI mode and enter
general imaging modes.
Or, press <B> on the control panel to return to B mode.
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